Head to Head
| Japan T League | 2019/08/31 09:30 | Koki Niwa v Chien-An Chen | L | 3-0 |
Home History
| Japan T League | 2019/08/31 09:30 | Koki Niwa v Chien-An Chen | L | 3-0 |
| Czech Open | 2019/08/22 14:20 | Yun-Ju Lin v Chien-An Chen | L | 4-3 |
| Czech Open | 2019/08/21 10:50 | Chien-An Chen v Linfeng Zhu | W | 4-1 |
| Bulgaria Open | 2019/08/16 17:30 | Tomokazu Harimoto v Chien-An Chen | L | 4-2 |
| Bulgaria Open | 2019/08/15 12:55 | Chien-An Chen v Youngsik Jeoung | W | 4-2 |
| Bulgaria Open | 2019/08/14 10:20 | Chien-An Chen v Tristan Flore | W | 4-0 |
| Korea Open | 2019/07/03 09:00 | Chuqin Wang v Chien-An Chen | L | 4-0 |
| Japan Open | 2019/06/13 07:10 | Heng-Wei Yang v Chien-An Chen | L | 4-3 |
Away History
| Japan T League | 2019/08/31 09:30 | Koki Niwa v Chien-An Chen | W | 3-0 |
| Czech Open | 2019/08/22 14:20 | Marcos Freitas v Koki Niwa | L | 4-1 |
| Bulgaria Open | 2019/08/15 13:45 | Marcos Freitas v Koki Niwa | L | 4-0 |
| T2 Diamond | 2019/07/19 10:00 | Koki Niwa v Mattias Falck | L | 2-4 |
| Australian Open | 2019/07/11 07:30 | Koki Niwa v Yun-Ju Lin | L | 3-4 |
| Korea Open | 2019/07/04 11:20 | Seungmin Cho v Koki Niwa | L | 4-1 |
| Japan Open | 2019/06/14 04:20 | Kazuhiro Yoshimura v Koki Niwa | L | 4-2 |
| Hong Kong Open | 2019/06/07 11:10 | Koki Niwa v Jun Mizutani | L | 2-4 |